- Number & description of indicators which represent an interaction where [System from] affects [System to]
- Only for indicators which a modelled endogenously in all models.
- Dissagregated across models, and linkage type.
- Direct: Indicator offers a direct link between the system by
(i) representing a causal relationship of the 1st degree between the systems in the model's mathematical formulation
(ii) having an unambigiously and very prominent signal to the adjacent system in the model formulation.
- Indirect: An indirect link is one which contributes to changes in the adjacent system, but
(i) its impact is mediated via another listed indicatorspan>
(ii) it undergoes a major qualitative change (i.e. its unit/definition is changed to measure a completely different physical or economic process).
- Total: All indicators, direct and indirect.